Record Display for the EPA National Library Catalog


Main Title Transport of Ozone by Turbulence and Clouds in an Urban Boundary Layer.
Author Greenhut, G. K. ; Ching, J. K. S. ; Pearson, Jr., R. ; Repoff, T. P. ;
CORP Author National Oceanic and Atmospheric Administration, Boulder, CO. Environmental Research Labs. ;Colorado State Univ., Fort Collins. Dept. of Atmospheric Science.;Environmental Sciences Research Lab., Research Triangle Park, NC.
Year Published 1984
Report Number EPA-600/J-84-053;
Stock Number PB84-226547
Additional Subjects Ozone ; Aerial surveys ; Boundary layer transition ; Air pollution ; Turbulent flow ; Clouds ; Transport properties ; Meteorology ; Urban areas ; Concentration(Composition) ; Reprints ;
Library Call Number Additional Info Location Last
NTIS  PB84-226547 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 11p
The turbulent fluxes of ozone and latent and sensible heat are computed from fast-response measurements made aboard a NOAA aircraft over downtown Philadelphia and the surrounding suburbs during the afternoon and evening of 22 August 1979. The normalized variances and spectra of vertical velocity, temperature, and ozone show little change with height or location in the urban center and northwest suburbs during the afternoon. Data from a cloud penetration by the aircraft is used to estimate a mean updraft velocity of 4 m/s and an updraft area of approximately 1 sq km. The flux of ozone due to the mean motion in the updraft is two orders of magnitude larger than the turbulent eddy fluxes within the cloud.